Duralio utilizes two types of profiles from Gealan: the S8000 IQ and S9000 IQ models. Known for their robustness, Gealan profiles are recognized in Romania for their quality, providing enhanced thermal comfort.

Gealan Fenster Systeme is a German manufacturer of PVC profiles for doors and windows with thermal insulation glass, established in 1921. The company has been present in the Romanian market since 1994, with its Romanian subsidiary founded in 1997, initially focused on marketing Gealan products. In 1999, it transitioned to its own production. As of August 2009, the company holds a 30% market share in Romania. Its main competitors in the local PVC joinery market include Rehau, Veka, and Profine.